Wrench



' Aug. 26, 1941. I

R. DENOVICH 2,253,895

WRENCH Filed Nov. 29, 1.940 2 Sheets-Sheet 1 In men tor i 06 er?" ,DefloV/cfi A iiorney Aug. 26, 194 1. R. DENOVICH WRENCH 2 Sheets-Sheet 2Filed Nov. 29, 1940 Inventor Fab er? ,Dezvar/cfi Attorney Patented Aug.26, 1941 UNITED STATES PATENT. OFFICE WRENCH Robert Denovich, Barberton,Ohio Application November 29, 1940, Serial No. 367,840

Q 1 Claim. (01. 81-139) 7 v This invention relates to wrenches and moreparticularly to wrenches of the type known as slide or monkey wrenches;and an object of the invention is to, generally, improve upon such typesof wrenches as are now known and used.

More particularly the invention has as its object to provide a moreefficient means for securing the jaws at the desired position ofadjustment; such jaw-retaining means being operable to effect a quickrelease to permit adjustment of the jaws, and an equally quick securingof the jaws in the desired position of adjustment.

The invention together with its objects and advantages will be bestunderstood from a study of the following description taken in connectionwith the accompanying drawings wherein:

Figure 1 is a longitudinal sectional view through the wrenchillustrating certain details hereinafter more fully referred to.

Figure 2 is a side elevational view of the wrench.

Figure 3 is an elevational view of a pawl assembly forming part of theinvention, with certain parts of the lever forming part of said assemblybeing broken away and shown in section.

Figure 4 is a detail sectional view taken substantially on the line 4-4of Figure 1.

Figure 5 is an elevational view of the shankequipped jaw forming part ofthe invention.

Figures 6 and 7 are detail sectional views taken substantially on thelines 6-6 and '|1, respectively, of Figure 1.

Referring more in detail to the drawings it will be seen that in thepreferred embodiment thereof the wrench embodies a shank 5 that at oneend is equipped with a suitable handle 6; the handle 6 being preferablycomposed of two complemental grip members between which one end of theshank is disposed, and which are secured to said end of the shankthrough the medium of screws or other fastening elements 1.

At the opposite end thereof the shank 5 is formed with an integral jaw8.

Complementing the jaw 8 is a jaw 9 that is formed integral with a sleeveI0 adapted to slide on shank 5.

To insure smooth operation of the wrench, and particularly incidental toeifecting an adjustment of the wrench, sleeve 10 is provided internallythereof with opposed pairs of ribs I I, and to complement the ribs II,the shank 5 is provided on opposite longitudinal edges thereof withlongitudinal grooves 12 (see Figures 5 and 6).

Accommodated within the sleeve IEI are pawls l3 and I4 disposed atopposite sides of the shank 5 and provided respectively with teeth 15and I6, respectively, that engage rack teeth I! and 18, respectively,provided on opposite longitudinal edges of the shank 5 as shown. I

The pawl 13 is formed integral with one end of a lever 19 that isaccommodated in a suitable recess 20a provided therefor in the sleeve I0as shown in Figure 1.

The lever 19 is angular in shape and at the angle between the respectiveopposite ends thereof the lever 19 on one side is provided with afulcrum rib or protuberance 20 that engages in a seat 2| providedtherefor in the sleeve ID at one side of the recess 20a as shown inFigure 1.

At the side thereof opposite to the fulcrum formation 29, the lever l9seats against a retaining bolt 22 that threads into the sleeve to extendtransversely of the recess 20a and as will be clear form a study ofFigures 1 and 4.

The lever I9 is normally biased in a direction to engage the pawl 13thereof with the shank 5 through the medium of a coil spring 23 thathas, an end thereof seated in a recess provided there for in the sleevel9 and a second end thereof impinging against the free end of the lever19 as shown in Figure 1.

For the lever 19 there is also slidably mounted on the sleeve I 0adjacent the inner end of the recess 29 a spring-biased push button 25that engages, as shown, the inner end of the lever l9 for causing thelatter to pivot and swing against the opposition of spring 23 to movethe pawl 13 out of engagement with the shank 5.

Pawls I3 and M are operatively connected together so as to worksimultaneously with one another for effecting a clamping of the jaws 8and 9 at the desired position of adjustment, and for effecting a releaseof the jaws to permit shifting thereof to thedesired position ofadjustment.

To the end just mentioned there are pivoted in the sleeve ID at oppositesides of the shank 5, and. as indicated at 26, relatively short rockerarms 21.

Links 28--28 pivotally connect one of the rocker arms 21 with the pawlsI3 and 14, while links 29, 29, pivotally connect the other of the rockerarms 21 with the pawls l3 and M in a manner clearly shown in Figures 1,3 and 7. Thus it will be seen that through this articulated connectionbetween the pawls l3 and I4, movement of the 0 lever l3 results in asimultaneous shifting of the pawls l3 and [4 into and out of engagementwith the shank 5.

From the foregoing description it is obvious that by pressing inwardlyon the button 25 lever l9'will be rocked on its fulcrum to effect adisengagement of the pawls I3 and M to release the shank 5. With theshank thus released jaws 8 and 9 may be shifted relative to one anotherto the desired position of adjustment. Upon such adjustment of the jawsrelease of the button 25 will result in the lever l9, in response to theaction of spring 23 swinging in a direction to engage the pawls l3 and Mwith the shank 5 there: by eifecting a securing of the jaws 8 and S inthis desired position of adjustment.

It will also be apparent that by removing the grips of the handle 6 andshifting the pawls I 3, I 4' to a released position, the shank 5 may bedrawn,v

entirely through the sleeve ID for efi'ecting a total separation of thejaws.

It is believed that the simplicity, utility and a vantages of a Wrenchembodying the features of.

the present invention will be understood by those skilled in the artwithout further detailed description.

It is also understood that it is in no wise intended to restrict theinvention to the precise embodiment herein illustrated, and that Iaccordingly claim all such forms of the invention to which I am entitledin view of the prior art and scope of the claim hereunto appended.

Having thus described the invention what is claimed as new is:

In a wrench, a shank, a relatively fixed jaw on one end of the shank, asleeve slidable on the shank and provided with recesses located at0pposite edges of the shank, a movable jaw integral with the sleeve,ratchet teeth on said edges of the shank, opposed toothed dogs coastingwith the ratchet teeth and arranged in the recesses, short leverspivoted intermediate the ends thereof within the sleeve at oppositesides of the shank, oppositely extending links pivoted to opposite endsof one of the levers and to the opposed clogs, oppositely extendinglinks pivoted to the opposite ends of the other lever and to the opposeddogs to bring about a reverse movement of one of the dogs through themovement of the other dog by the actuation of the latter-named dog, aspring influenced lever pivotally mounted in one of the recesses andformed on the last-named dog and normally urging said dogs intoengagement with theratchet teeth, and a spring influenced fingerplunger-engaging-thelast-named lever and slidably mounted in the.sleeve.

ROBERT DEN OVICH.

